This page explains how Alan Duvall (USATT# 25205)'s rating went from 1297 to 1330 at the 21st Annual Bernard Hock Open held on - 15 Oct 2006. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.